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OpenStudy (blake57roger):
A circle has a radius of 9 mm. What is the approximate area of the circle
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OpenStudy (anonymous):
pi x r^2
OpenStudy (anonymous):
3.14 x 9^2 3.14 x 81 254.34
OpenStudy (anonymous):
So the answer is 254.34
OpenStudy (gorv):
pi*9*9 mm^2
OpenStudy (anonymous):
254.469 mm²
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OpenStudy (blake57roger):
thanks
OpenStudy (anonymous):
That's exact though
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